Alumina base ceramic sintered body and its manufacturing method
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United States of America Patent
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Oct 17, 2000
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N/A
app pub date -
Sep 9, 1999
filing date -
Oct 23, 1997
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Expired
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Abstract
This invention provides an alumina base ceramic sintered body excellent in wear resistance with high hardness, also with high strength and high toughness, and particularly suitable for a cutting tool or wear resistant member. This sintered body contains 5-70 % by volume of WC and 5-70% by volume of Ti (C,N) solid solution having a C/N mole ratio ranging from 1:9 to 9:1, the WC and Ti (C,N) having particle sizes of 5 .mu.m or less, respectively.
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